He admitted acting together with several others to intentionally cause serious injury to Darnell Brown. The defendant and victim are not related, according to prosecutors.

Darnell Brown was attacked June 12, 2010, outside the Prince Hall Masonic Temple on West Brighton Avenue where he had been celebrating his upcoming 27th birthday.

According to authorities, Jerrell Brown and two others -- Kenneth Binder and Morrice Harper -- were punching and kicking the victim when a fourth suspect -- Derek Singletary -- entered the fight and stabbed the victim in the neck and chest.

Jerrell Brown will be sentenced by Fahey Aug. 2 to nine years in state prison. He could have faced a maximum penalty of 25 years in prison.

Binder, 24, of West Borden Avenue, and Harper, 25, of Lafayette Road, both are serving 10-year sentences after pleading guilty to first-degree gang assault.

Singletary, 25, of South Collingwood Avenue, pleaded guilty last month to a reduced charge of first-degree manslaughter for stabbing the victim to death during the fight. His plea deal calls for Fahey to sentence him to 20 years in state prison. He had been facing a second-degree murder charge carrying a maximum penalty of 25 years to life in prison.